A 75-year-old Rockland County man admitted in court that he used his apartment as a den for prostitution and crack smoking in exchange for cash – and was sentenced to a year in jail.

Abe Posner, of Chestnut Ridge, pleaded guilty Wednesday to promoting prostitution -admitting to Judge William Kelly that as many as a dozen hookers used his one-bedroom apartment to conduct business. Posner was arrested in January and spent four months contending he was innocent before coming clean.

The former Garment District worker told the court he rented out his bedroom to the prostitutes, while a steady stream of patrons used other rooms to smoke crack, also paying him for use of the space. Posner said he was confined to his living-room sofa because of severe diabetes and the bedroom door was always locked during the sexual escapades.

As part of the plea agreement, Posner has waived his right to appeal. With time served and time off for good behavior, he could be a free man as early as September.